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The Analysis of AC/A Ratio in Nonrefractive Accommodative Esotropia Treated with Bifocal Glasses

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dc.contributor.authorKim, WK-
dc.contributor.authorKang, SY-
dc.contributor.authorRhiu, S-
dc.contributor.authorChung, SA-
dc.contributor.authorLee, JB-
dc.date.accessioned2014-07-07-
dc.date.available2014-07-07-
dc.date.issued2012-
dc.identifier.issn1011-8942-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/10468-
dc.description.abstractPurpose: To report the long term results of bifocal treatment in nonrefractive accommodative esotropia and to analyze the changes of accommodative convergence to accommodation (AC/A) ratio.



Methods: Sixteen patients treated with bifocal glasses for at least 5 years were evaluated retrospectively. Angle of deviation at near and distance, refractive error, and AC/A ratio by the lens gradient method were analyzed. The changes of AC/A ratios were also compared after dividing the patients according to continuation or cessation of bifocal therapy.



Results: Six patients (38%; bifocal stop group, BSG) were able to stop using bifocal glasses at an average age of 10.8 years (range, 6.5 to 15.4 years) during their follow-up. However, the other ten patients (62%; bifocal continue group, BCG) had to continue using bifocal glasses until the final visit, which was 13.8 years on average (range, 11.3 to 18.5 years). The AC/A ratio decreased from time of bifocal prescription to the last visit in both groups, from 4.4 to 2.7 in the BSG and from 5.9 to 4.5 in the BCG. AC/A ratios were significantly higher (p = 0.03) in the BCG than that of the BSG from the beginning of bifocal treatment and this difference was persistent until the final visit (p = 0.03).



Conclusions: The AC/A ratio decreased with age in both groups but was significantly higher throughout the entire follow-up period in the BCG. AC/A ratio at bifocal prescription could be an important factor in predicting response to bifocal treatment.
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dc.language.isoen-
dc.titleThe Analysis of AC/A Ratio in Nonrefractive Accommodative Esotropia Treated with Bifocal Glasses-
dc.typeArticle-
dc.identifier.urlhttp://synapse.koreamed.org/search.php?where=aview&id=10.3341/kjo.2012.26.1.39&code=0065KJO&vmode=FULL-
dc.subject.keywordAccommodation-
dc.subject.keywordConvergence-
dc.subject.keywordEsotropia-
dc.contributor.affiliatedAuthor정, 승아-
dc.type.localJournal Papers-
dc.identifier.doi10.3341/kjo.2012.26.1.39-
dc.citation.titleKorean journal of ophthalmology : KJO-
dc.citation.volume26-
dc.citation.number1-
dc.citation.date2012-
dc.citation.startPage39-
dc.citation.endPage44-
dc.identifier.bibliographicCitationKorean journal of ophthalmology : KJO, 26(1). : 39-44, 2012-
dc.identifier.eissn2092-9382-
dc.relation.journalidJ010118942-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Ophthalmology
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